CN204226655U - The control valve that a kind of nothing leaks outside - Google Patents
The control valve that a kind of nothing leaks outside Download PDFInfo
- Publication number
- CN204226655U CN204226655U CN201420498763.9U CN201420498763U CN204226655U CN 204226655 U CN204226655 U CN 204226655U CN 201420498763 U CN201420498763 U CN 201420498763U CN 204226655 U CN204226655 U CN 204226655U
- Authority
- CN
- China
- Prior art keywords
- filler
- valve
- ptfe
- board
- nail pressing
- Prior art date
Links
- 239000000945 fillers Substances 0.000 claims abstract description 95
- 210000000282 Nails Anatomy 0.000 claims abstract description 22
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 20
- 229920001343 polytetrafluoroethylenes Polymers 0.000 claims abstract description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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[C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 15
- 239000010439 graphite Substances 0.000 claims abstract description 15
- 230000002040 relaxant effect Effects 0.000 abstract description 3
- 230000000051 modifying Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 materials Substances 0.000 description 2
- 238000000034 methods Methods 0.000 description 2
- 210000003660 Reticulum Anatomy 0.000 description 1
- 238000010586 diagrams Methods 0.000 description 1
- 238000005516 engineering processes Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reactions Methods 0.000 description 1
- 230000000607 poisoning Effects 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 239000002994 raw materials Substances 0.000 description 1
- 239000000126 substances Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000002699 waste materials Substances 0.000 description 1
Abstract
Description
Technical field
The utility model relates to control valve field, is specially the control valve that a kind of nothing leaks outside.
Background technique
Control valve is the terminal control original paper of automatic control system, particularly in chemical plant installations, there is many high temperature and high pressure conditions, medium has stronger toxicity and corrosivity, and inflammable and explosive, when valve has leakage, not only can cause the waste of raw material and product, and also can cause severe contamination to environment, even cause the security incident of fire, blast, the life threatening such as poisoning.Therefore, the sealing problem of valve should cause enough attention, reasonably selects the sealing of control valve to be very important in design selection.The sealing of valve is divided into two kinds, i.e. outside seal and inner sealing, for the outside seal of control valve, i.e. packing seal, the filler of modulating valve is generally contained in the stuffing box of the bonnet of modulating valve, effect stops the leakage by adjusting processing medium to cause because of stem movement, and the valve stem seal of valve nearly all utilizes stuffing box to realize.Conventional filler can be divided into two large classes according to material: graphite and polytetrafluoroethylene (PTFE), derive a variety of filler, with the requirement of satisfied different operating mode by this two classes base material simultaneously.In the process that control valve uses at the scene, because the many reasons such as environment, operating mode and self structure cause the filler place of modulating valve to leak, it is the more common fault of modulating valve, also be influential system device quantity-produced key factor, the example causing device to stop because of modulating valve packing leaking is also rarely seen absolutely not, is a great problem of puzzlement valve industry.
Model utility content
The technical problem that the utility model solves is the control valve providing a kind of nothing to leak outside, to solve the problem.
The technical problem that the utility model solves realizes by the following technical solutions:
The control valve that a kind of nothing leaks outside, comprise valve body, valve seat, valve core valve stem, guide sleeve, valve gap, graphite packing, filler spacer, PTFE spacer, fastening piece, filler top board, belleville spring, filler press table, filler nail pressing, O shape circle, described valve seat and guide sleeve are fixedly mounted in valve body, and valve gap is connected with valve body fastening piece; Described valve core valve stem is through guide sleeve and valve gap, and the filler between the stuffing box of valve gap and valve core valve stem is graphite packing and PTFE filler; Separate with filler spacer between described graphite packing and PTFE filler; Filler nail pressing, filler press table, belleville spring, filler top board is provided with successively above described PTFE filler, and filler nail pressing is inserted in inside and outside O shape circle, filler top board is connected with valve gap by fastening piece, and butterfly spring is between filler press table and filler top board.
As preferably, described control valve adopts triple seal, and the additional belleville spring pretension in stuffing box top, adopts arc surface to contact between filler nail pressing and filler press table.
As preferably, in described stuffing box, graphite packing is positioned over bottom, and PTFE filler is placed on top, places the filler spacer of hollow between 2 kinds of fillers, and filler nail pressing places O shape circle.
The utility model is by adopting triple seal, most operating modes and the seal request of medium can be met, pressing plate nail pressing have employed " mobile load " structure, namely between filler nail pressing and pressing plate, butterfly spring is added, even if filler generation senile abrasion, valve internal pressure change greatly, butterfly spring can compensate the pretightening force be pressed on filler, thus prevents from relaxing because of follower bolt or filler relaxes and causes leaks outside, and makes filler load remain constant.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of No leakage stuffing box.
Embodiment
In order to make actualizing technology means of the present utility model, creation characteristic, reach object and effect is easy to understand, below in conjunction with concrete diagram, set forth the utility model further.
As shown in Figure 1-2, the control valve that a kind of nothing leaks outside, comprise valve body 1, valve seat 2, valve core valve stem 3, guide sleeve 4, valve gap 5, graphite packing 6, filler spacer 7, PTFE spacer 8, fastening piece 9, filler top board 10, belleville spring 11, filler press table 12, filler nail pressing 13, O shape circle 14, described valve seat 2 and guide sleeve 4 are fixedly mounted in valve body 1, and valve gap 5 is connected with valve body 1 fastening piece; Described valve core valve stem 3 is through guide sleeve 4 and valve gap 5, and the filler between the stuffing box of valve gap 5 and valve core valve stem 3 is graphite packing 6 and PTFE filler 8; Separate with filler spacer 7 between described graphite packing 6 and PTFE filler 8; Described PTFE filler 8 is provided with filler nail pressing 13, filler press table 12, belleville spring 11, filler top board 10 above successively, and filler nail pressing 13 is inserted in inside and outside O shape circle 14, filler top board 10 is connected with valve gap 5 by fastening piece 9, and butterfly spring 11 is between filler press table 12 and filler top board 10.
As preferably, described control valve adopts triple seal, and stuffing box top additional belleville spring 11 pretension, adopts arc surface to contact between filler nail pressing 13 and filler press table 12.
As preferably, in described stuffing box, graphite packing 6 is positioned over bottom, and PTFE filler 8 is placed on top, places the filler spacer 7 of hollow between 2 kinds of fillers, and filler nail pressing 13 places O shape circle 14.
The utility model is by adopting triple seal, most operating modes and the seal request of medium can be met, pressing plate nail pressing have employed " mobile load " structure, namely between filler nail pressing and pressing plate, butterfly spring is added, even if filler generation senile abrasion, valve internal pressure change greatly, butterfly spring can compensate the pretightening force be pressed on filler, thus prevents from relaxing because of follower bolt or filler relaxes and causes leaks outside, and makes filler load remain constant.
More than show and describe basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.Claimed scope of the present utility model is defined by appending claims and equivalent thereof.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420498763.9U CN204226655U (en) | 2014-09-01 | 2014-09-01 | The control valve that a kind of nothing leaks outside |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420498763.9U CN204226655U (en) | 2014-09-01 | 2014-09-01 | The control valve that a kind of nothing leaks outside |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204226655U true CN204226655U (en) | 2015-03-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420498763.9U CN204226655U (en) | 2014-09-01 | 2014-09-01 | The control valve that a kind of nothing leaks outside |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204226655U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523724A (en) * | 2015-09-11 | 2017-03-22 | 骊住株式会社 | Faucet |
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2014
- 2014-09-01 CN CN201420498763.9U patent/CN204226655U/en not_active IP Right Cessation
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106523724A (en) * | 2015-09-11 | 2017-03-22 | 骊住株式会社 | Faucet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150325 Termination date: 20170901 |